Which of the following ores undergo calcinati | vedclass

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(B) Calcination is a process of heating an ore in a limited supply of air or in the absence of air. It is typically used for carbonate and hydroxide o

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$b$ and $c$

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(B) Calcination is a process of heating an ore in a limited supply of air or in the absence of air. It is typically used for carbonate and hydroxide ores.$(a)$ Argentite $(Ag_2S)$ is a sulfide ore,which undergoes roasting.$(b)$ Bauxite $(Al_2O_3 \cdot 2H_2O)$ is a hydrated oxide ore,which undergoes calcination to remove water.$(c)$ Malachite $(CuCO_3 \cdot Cu(OH)_2)$ is a carbonate/hydroxide ore,which undergoes calcination.$(d)$ Copper pyrite $(CuFeS_2)$ is a sulfide ore,which undergoes roasting.Therefore,both bauxite $(b)$ and malachite $(c)$ undergo calcination.

Which of the following ores undergo calcination during the extraction process?

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